Using the formula (a + b)2 = (a2 + 2ab + b2), evaluate (310)2. – InterviewSolution

1.

Using the formula (a + b)2 = (a2 + 2ab + b2), evaluate (310)2.

Answer»

Given (310)²

We have (a + b)²= (a²+ 2ab + b²)(310)²can be written as 300 + 10 So here a=300 and b=10

Using the formula,

(300 + 10)²= (300²+ 2 X 300 X 10 + 10²)

On simplifying we get

(300 + 10)²= (90000 + 6000 +100)

(310)²= 96100

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